1. Boreal Forest, Canada Uses: Cough, cold and sore throat DOI: 10.1186/1746-4269-8-7 PubMed: 22289509
1. Synthesis of lignan aryldihydronaphthalene lactones by cyclization of cinnamyl arylpropiolate esters: revised structure of beta-apopolygamatin. Stevenson R and Weber JV (1991). J Nat Prod. PubMed: 1646287